No. This accusation is made every year and it's bogus.
Classifying cyclones is not a cut-and-dried process like everyone wants it to be-- there are all kinds of weird, in-between systems that require a judgment call one way or the other. I should point out that every season-- including 2005-- has its share of borderline systems that get named. I should also point out that there have been a couple of other borderline systems this year that the NHC chose not to classify, much to the chagrin of many online weather nerds.
It sometimes seems that the NHC can't win: whether they do or don't classify a borderline system, someone will accuse them of having ulterior motives.
I agree completely w/ the above. To elaborate further:
TD16 (Nicole) was a system that was warm core, no baroclinic influences near the center of a closed circulation (broad,
but still *closed*...that is key), decent convection (although unorganized), and at least 25 kt (35 kt) sustained winds...
what else would you call it? I agree it was more like a monsoonal depression, but why argue about
exact nomenclature
in this particular case when it mostly fit the definition of a TC (keeping in mind there are no exact boundaries when
dealing w/ weather) and the sensible impact was (or effectively like) a TC. And I do not think it would haven been worth
it to try to explain to the general public that was only a monsoonal depression...that just would have caused confusion
(again, in this case...it is not like we were dealing w/ some hybrid when it comes in to question, "is it more tropical than
extratropical or vice versa?").
True, Nicole was on the fence, but I think TPC made the correct call. We have seen a number of tropical systems over the
last 10-15 years that appeared more questionable in their designations/classifications. But the important thing to keep in
mind is that the atmosphere produces a very broad range of phenomena that overlap in so many ways and
doesn't care one
bit about human-imposed classifications...it does what it does.
A case where it was even tougher was pre-Hermine in the Gulf of Mexico in Sep 1998:
http://www.nhc.noaa.gov/archive/dis/NAL0898.001
http://www.ncdc.noaa.gov/gibbs/image/GOE-8/IR/1998-09-17-21
http://www.ncdc.noaa.gov/gibbs/image/GOE-8/WV/1998-09-17-21
One another note:
For pre-Nicole, the 29/12z advisory had it 996 mb and still a TD...that is the lowest pressure for a TD in the ATL for a system
still in the tropics I believe. We were dealing w/ a lower than normal environmental pressure field around the system, so the
gradient was lacking, hence the lower winds than we would normally see.
http://www.hpc.ncep.noaa.gov/archives/sfc/namfntsfc2010092912.gif